Our tour of Glenrock Scout Camp started with a demonstration of the human sundial. John le Messurier showed us how to stand so that our cast shadow showed us the time of day. We were gathered on a hill looking out over the regenerated and replanted estuary, with a sea view and hang gliders flying the cliffs. It was magical. John pointed out the bush regeneration beside us and in the casuarina dense gully where all the current growth of trees and understorey had been individua